(doc) Add release notes for Extension 6.3.0

This updates the release notes section for Chocolatey Licensed Extension to include
the changes that has gone into the v6.3.0 version.

Author: corbob

src/content/docs/en-us/licensed-extension/release-notes.mdx

@@ -45,6 +45,17 @@ Please see <Xref title="Install the Licensed Edition" value="setup-licensed" />
 
 <ChocolateyComponentDependenciesLink />
 
+## 6.3.0 (Dec 4, 2024) \{#v6.3.0}
+
+### Bug Fixes
+
+- Fix - Ensure invalid .arguments files do not prevent running Chocolatey CLI commands.
+- Fix - Update Search threshold text to match open source.
+
+### Improvement
+
+- Provide better information through the user agent when querying remote repositories including the Licensed Extension version.
+
 ## 6.2.1 (June 27, 2024) \{#v6.2.1}
 
 ### Bug Fixes